//number of images
num=8;

//start menu slide show code
if (document.images) {
 	b1_over= new Image(203,88); 
 	b1_over.src="images/layout/chemicals0_over.jpg"; 

 	b2_over= new Image(196,88); 
 	b2_over.src="images/layout/equipment0_over.jpg"; 

 	b3_over= new Image(190,88); 
 	b3_over.src="images/layout/about_us0_over.jpg"; 

 	b4_over= new Image(187,88); 
 	b4_over.src="images/layout/contact_us0_over.jpg"; 
}
chemicals_a = new Array(num);
equipment_a = new Array(num);
about_a = new Array(num);
contact_a = new Array(num);

for(i=0;i<num;i++) {
	chemicals_a[i] = "chemicals" + i + "_off.jpg";
	equipment_a[i] = "equipment" + i + "_off.jpg";
	about_a[i] = "about_us" + i + "_off.jpg";
	contact_a[i] = "contact_us" + i + "_off.jpg";
}
cur_over="";
i=0;
function slide_show() {
	i_mod=i%num;
	if(cur_over!="chemicals") {
		document['chemicals'].src="images/layout/" + chemicals_a[i_mod];
	}
	if(cur_over!="equipment") {
		document['equipment'].src="images/layout/" + equipment_a[i_mod];
	}
	if(cur_over!="about_us") {
		document['about_us'].src="images/layout/" + about_a[i_mod];
	}
	if(cur_over!="contact_us") {
		document['contact_us'].src="images/layout/" + contact_a[i_mod];
	}
	i++;
	setTimeout('slide_show();',7000);
}
function swap(over) {
	document.getElementById(over).src="images/layout/" + over + "0_over.jpg";
	cur_over=over;


}
function restore(over) {
	document[over].src="images/layout/" + over + "0_off.jpg";
	cur_over="";

}
//end menu slideshow code

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}